speed

英[spi:d]美[spi:d]

n.
1.[C]速度，迅速，速率
2.[U] 速度，迅速，速率，[俚]脱氧麻黄碱(一种强兴奋剂)
v.[T]
快速运送，促进，使加速
v.[I]
快行，加速，超速，快进

时　态：sped,speeded,speeding,speeds

同反义词

同：	[n.] f number, fastness, hurrying, velocity [v.] accelerate, hasten, hurry, speed up
反：	[v.] dawdle, decelerate, linger, slow down

词义辨析

haste，speed，hurry，dispatch

这些名词均含“迅速，急速”之意。
haste中性词，用作褒义指动作迅速，事情做得又快又好；作贬义用时，指做事急躁，行为鲁莽，得不到预期的结果。
speed多用于褒义，指行动敏捷快速，效果好。
hurry指急速从事某项活动或匆忙对付一件事情，含明显慌乱的意味。
dispatch指迅速、敏捷地结事某事，强调敏捷和及时。

参考例句

A stream flows at a great speed past the house.
一条小溪从房子旁边奔流而过。收藏
Postal workers labored overtime to speed delivery of the Christmas mail.
邮电工人加班加点以加速圣诞期间信件的发送。收藏
The linear scaling and the Reynolds number represent classical, aerodynamic similitude requirements applicable to law-speed flight.
线性缩尺和雷诺数是低速飞行时经典的气动力模似要求。收藏
She did not actually try to shake him off, but walked at just such a speed as to prevent his keeping abreast of her.
她并没有想甩掉他，但是走得很快，使他无法跟上。收藏
This mode is used to set the film speed for non-DX films, or to set a different film speed than that specified for DX-coded films.
这种模式也可用于设置非DX型胶卷,或设置非DX型胶卷规定的不同胶卷速度。收藏

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常用短语

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英英解释

名词解释：

distance travelled per unit time
[同] speed, velocity
a rate (usually rapid) at which something happens
- the project advanced with gratifying speed
[同] fastness, speed, swiftness

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动词解释：

step on it
- He rushed down the hall to receive his guests
- The cars raced down the street
[同] hasten, hie, hotfoot, belt along, bucket along, cannonball along, pelt along, race, rush, rush along, speed
[反] dawdle, linger
move faster
- The car accelerated
[同] accelerate, quicken, speed, speed up
[反] decelerate, retard, slow, slow down, slow up

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